Cylinder-lock.



R. SCHOELL.

CYLINDER LOCK. MPLICATION man Nov. 1o. 19a,4

Patented Dec.

:iliHIlIll f4 Illllllllll'-"w W NESS/5S l @Tit REINHOLD SCHOELL, 0F STANFORD, CONNECTICUT, ASSGNOR TO THE YALE 8c TOWNE MANUFACTURNG COMPANY, OF STANFORD, CONNECTICUT.

CYLINDER-LOCK.

Specification of Letters Patent.

' Patented Dec. '7, 1915 Application led November 10, 1914. Serial No. 871,396.

To @ZZ whom it may concern:

Be it known that I, REINHOLD SCHOELL, a citizen ot' the United States, and a resi# dent oi" Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Cylinder-Locks; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in pin tumbler locks and keys for the same, and it consists in the parts and combination of parts as will be more fully described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a View in perspective of the cylinder; Fig. 2 is a view in longitudinal section of the same; Fig. 3 is a view in transverse section; Figs. 4c and 5 are views of the connecting bar plug detached; Figs. 6 and 7 are views of the key plug; Fig. 8 is a view in end elevation of same; Fig. 9 is a View of the key and Fig. 10 is a diagram showing the manner of laying out the pin holes or pockets in the ke for locking the cylinder to the door and Fig. 12 is a view of the escutcheon plate.

The cylinder consists of a tube 1 having a flanged end 2 to which the struck up face plate or escutcheon 3 is riveted. This face plate is provided with a key slot the central yportion of which is enlarged and rounded as at 5, so that when the key 7 has been properly entered in the cylinder, the reduced neck G of the key will be within said rounded portion of the key slot and free to turn therein. rlhe shank 8 of the key is of greater width than the enlarged rounded part 5 of the key slot, hence the key cannot be turned until it has been fully entered in the lock.

The tube 1 of the cylinder has a portion of its wall pressed outwardly as at 9, forming va. pocket 10 which extends lengthwise of the cylinder, in which the outer ends of the pins 11 normally rest. The side walls of the ocket are curved or beveled as shown in iig. 3, so that when the key plug 12 is turned by the key, the beveled ends of the pin tumblers 11 engaging said side4 walls, will be pushed inwardly into the plug thus permitting the latter to turn.

They plug 12 is located within the cylinder,

Fig. 11 is a view showing the sleeve 'and consists simply of two disk shaped ends I 14 and a body portion 15, the latter being provided with a series of recesses 16 for the pin tumblers 11, and also with a key slot, which also passes through the ends 14: of the key plug. The recesses 16 for the pins 11, communicate with the key slot, and when the key plug is so turned that the outer ends of the pins are within the pocket 10 in the cylinder, the inner ends lof the pins will be clear of the key slot thus leaving the latter unobstructed for the free entrance of the key,'as shown in Fig. 3.

Mounted to turn in the rear end of the cylinder, and at the rear of the plug 12, is the connecting bar plug 17, to which the connecting bar 18 is secured. The connecting bar plug is free to turn in said cylinder and is independent of the plug, and is provided at its inner end with a recess 19 in which the reduced end 2O of the key 7 rests, and with the slot 21 in which the shoulders 22 of the key rests when the latter is fully inserted, so that said connecting bar plug 17 is turned directlyI and positively by the key and not by the plug 12, the latter bein wholly disconnected from the plug 17 an free to turn independently of the'latter.

The connecting bar plug 17, as shown in Figs. 4 and 5, is provided at its front end with the iange 23 which rests between the rear plate 24 and the rear end of the plug 12, so that it is free to rotate independently of the plug. v

The key 7 is a flat key and is of such length that when its neck 6 is within the key slot in the face plate of the cylinder, its reduced end 20 and its shoulders 22 will be in engagement with the connecting bar plug 17. 1t is also provided with a series of holes or pockets 25 which correspond in position to the pin tumblers, so that when the key is inserted andturned to either the right or the left, the movement of the plug 12 will carry the pin tumblers inwardly, their inner ends entering the pockets 25 in the key.v lf a keyy or instrument not provided with pockets `for the end of the pin tumblers be inserted in the key slot of plug 12 and pressure applied in a direction to turn the same, such key or instrument will block the movement of the pin tumblers into the key slot .and thus absolutely prevent the key plug 12 from being turned consequently preventing plug 17, is connected to the roll back of the 'cutcheonl By entering the key vin the plug and turnlock of the rim latch type in the Well known manner, and operates to retract the bolt of the lock when the key is turned.

The combination of the` lock may be changed by reversing or changing the position of any tWo pin tumblers, and for convenience in illustrating the method of changing the combination, I have shown in Fig. 8, a key divided intoivepin tumbler spaces by the longitudinal lines awt- Gaal` and' e and transverse lines 1-2-3-t and 5.

The pockets 25 in the key, are 'located at the intersection of the longitudinal and transverse lines, and if the tirst recess 25 and its corresponding pin 1l now at the intersection of the lines al be moved to the intersection of the lines all, the fourth pocket 25 and its corresponding pin, must be moved up to the intersection of the lines at. lf the pocket at the intersection of the lines b2 be changed to e2, the pocket at 'e5 would be changed to b5, and so on throughout the entire series, the proper changes of course being also made in the location of the pins.

F rom the foregoing itwvill be seen that in order to actuate the bolt of the lock, a

key having a pocket for each of the Vpin tumblers, land an end to engage the connecting bar plug must be'used. lf any one of the pockets in the key does not aline with its pin tumbler the plug with the key therein cannot be turned, consequently the connecting bar plug cannot be turned toretract the bolt.

dentally turning, or rather to yieldinglyhold it with its key slot in alinement With the key slot in the escutcheon, I have provided it with a spring pressed plunger 2G, at the rear end thereof, which enters a seat in the cylinder as at 27, when the key slot in the plug alines with the key slot in the esing same, the plunger will be forced into the plugy and will again seat itself in the recess after the latter has been turned to its normal position. The lock thus constructed is secured to the door by the sleeve 28, which `is adapted 'to engage lugs 29 on the cylinder l: This sleeve is of slightly greater diameter than the diameter of the Vcylinder 1, so that its inner open end may receive and embrace the inner end of the cylinder, and it is pron vided at diametrieally opposite sides with the longitudinal slots 30, which Alatter, start nal slot 30,. at opposite sides' of the latter,

aretthe'cam slots 32, the carnvslots at One side of each longitudinal slot being located intermediate the caml slots at the opposite side of said longitudinal slot, so that one of the series of cam slots of each longitudinal slot will always be in a position to engage the lugs 29 on the cylinder.

ln applying the cylinder to a door, a hole greater in diameter than the cylinder is bored through the door and the cylinder placed therein With its face plate or escutcheon against the outer face of the door, and the prongs 33 are driven into the face of the door and operate to prevent the cylinder from turning. he sleeve 28 is then entered into the hole at the rear side of the door and turned, it necessary to enter the lugs 29 on the cylinder, in the longitudinal slots in the sleeve, after Which the sleeve is turned in a direction to cause the lugs 29 to enter the cam slots with which the lugs aline, and then by continuing the turning movement of the r'and sleeve toward each other, thus irmly securing thel parts to the door.

After the parts have been drawn toward each other so as to tightly clamp the face plates of the cylinder and sleeve against the opposite faces of the door, the sleeve is locked against turning movement by pins passing through the face plate-and into the door.

.lt is evident that many slight changes might be resorted to in the relative arrangement of parts shown and described without departing from the spirit and scope of my invention. Hencel would have it underx' stood that I .do notwish to confine myself ln order to prevent the plug from acci,-

to the exact v construction and arrangement of parts shown and described but,

vHaving fully described my invention what I claim as new and desire to secure by Let' ters-Patent, is

' 1. ln a pin tumbler lock, the combination I cidental turningl movement, and a bolt actu!- vating device movable with the key and plug when the latter is actuated by the key. l

2. In a pin tumbler lock, the combination of a cylinder, a key plug mounted in said cylinder and provided with a. key slot, pin tumblers carried by said key plug and mdvable intolthe key slot, means against which the outer ends of the tumblers bear for mov- 13 meevevo ine; the tuinblers longitudinally into tbe key slot when the key plug; is turnecl, :L lrey buv ing; :L pocket 'for the end. o euch 19in tumbler, :1nd :L bolt actuating; device carried. by the cylinder and actuated directly by the key.

3. In :L goin tumbler leek, tbe combination of :L cylinder, :L bolt :Lctuuinug1r device movably mounted in the rear enel thereof, :L key plug mounted to 'turn in said. cylinder unil providedv Within, key slot, :L series of pin tumblers cur-rieti by the plug, means for moving said tumblers into the key slot when the seid. plug is turned by the lrey, :incl :L

key having :L poeliet for the end oin each pin tumbler, the seid key engaging the bolt actuating; device for turning the sume.

4. n :L pin tumbler lock, the combination with :L cylinder having :L pocket therein, u key plugmounted in said cylinder and pro videcl'witli :L key slo`l :L series of pin tumbleI-s carried by euel plug,tl1e outer ends of Suid tumblere movubly resting in the pocket in the cylinder and their inner ends mov able across said lie slot when the cylinder is turned, :L bolt actuating' device rotatably mounted :it the inner end of the cylinder and :L l; y adapted to engage said bolt actuating device for rotating' sume, provided with. pockets to receive the inner enfle of 'tbe tumblers es the letter :ire moved inwardly by the rotationor" the lrey plug.

5. ln e piu tumbler lock, the combination of :L eylintler, tbe fece plete of which is provided with :L key slot, :L key plug mounted to rotate in seid cylinder, :L bolt actuating deviee mounted iu seid cylinder, :it the rear of the leey plug, but dieconnecteclfrom the latter, a, pluruiity'of pin tumblers carried by the key plug, and :L fiat key constructed to engage the bolt actuating' device for actuating the sume, :incl also provided with pockets to receive the inner ends ot' the pin tumblers as the lutter are moved; into the key slot.

6. ln :L 4pin tumbler lock, the combination of :L cylinder, :L key plug mounted in said cylinder and 'provided with u key slot, piu tumblers carried by the lrey plug ami movable into the key slot when seid pluie;I is turned, means for oositivelyinoving the pin tumblers longitudinally during' the rotation of the plug, L bolt actuating device having :L rotary movement indepenelent of tbe key plug; :Lncl operated directly by the key, fand :L key constructed to permit of the longitudinnl movement of the tuniblers.

ln testimony whereof, l lieve signed?. this specification in the presence of two subscribing' Witnesses.,

Witnesses'.

SCHUZILER Mmmm, E. M. Ceozneu. 

